Water loop heat pump (WLHP) system and ground source heat pump (GSHP) system

Both can be through the water source heat pump water - air heat pump or water - water heat pump system for building the heat or cold quantity, is the difference between WLHP system usually refers to the use of cooling towers and boiler keep annual winter and summer seasons water temperature stability of the system, while the GSHP system usually refers to the use of groundwater, surface water, underground heat exchange system or the underground heat exchange system combined with cooling tower, boiler and other forms to maintain water supply temperature stability of the system; In addition, GSHP WLHP is commonly distributed system, the can for distributed systems can also be used for a centralized system.

For WLHP system is suitable for any occasion, a study suggests that the simple cooling or simple heating choose water loop heat pump is unreasonable; To have refrigeration and heating, air conditioning buildings, at the same time when smaller or larger than its internal heat, using WLHP system energy saving effect is not obvious, only when the unit discharge of heat absorption heat source of heat pump units and some similar, only has an obvious advantage in energy saving. For a particular building, the designers need to be used according to the structure of the cold and hot load curve, characteristic, function, environment and so on many factors comprehensive evaluation using WLHP system is energy saving, right. Generally speaking, the following conditions may consider using WLHP: (1) is stable and reliable low grade waste heat can be used; (2) within the building as well as the needs of the cooling and heating; Refrigerating capacity is not big, and requires independent measuring electricity, use time is differ, individual room or area often need to be used independently building at night or holiday.

Applicable occasions, ground source heat pump system for distributed systems, similar to the above water loop heat pump system; For the centralized system, the concentration of cold water or hot water in each room in the building, has wide application scope, especially suitable for office buildings, schools and villas.